I bought this for my bf because he struggles with allergies. We've had it since March and it's helped with his snoring a bit, too. The Alen has pretty much been on Turbo 90% of the time since we got it and the filter is still in the green! The turbo setting can be a bit loud but it isn't obnoxious. Very easy to carry/lift. It is powerful for its size and a great investment for those wanting to try out a quality purifier for the first time. I love this Alen and am itching to get another!